The MIL-DTL-38999 Series II connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range between -65 °C and 200 °C. Available in various mounting styles including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility for different applications. These connectors come in aluminum shells with options for plating finishes such as cadmium and nickel, ensuring durability and reliability. With RoHS compliant versions available, they are suitable for a wide range of military and industrial uses.